package cn.dm.service.impl;

import cn.dm.config.AliPayConfig;
import cn.dm.service.AlipayService;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

@Component
public class AlipayServiceImpl implements AlipayService {

    @Resource
    private AliPayConfig aliPayConfig;
    @Override
    public String goPay(String orderNo,String totalAmount,String itemName) throws Exception{
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(aliPayConfig.getUrl(),aliPayConfig.getAppId(),aliPayConfig.getAppPrivateKey(),"json", aliPayConfig.getCharSet(), aliPayConfig.getAlipayPublicKey(), aliPayConfig.getSignType() );

        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(aliPayConfig.getReturnUrl());
        alipayRequest.setNotifyUrl(aliPayConfig.getNotifyUrl());

        //商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no = orderNo;
        //付款金额，必填
        String total_amount = totalAmount;
        //订单名称，必填
        String subject = itemName;
        //商品描述，可空
        String body = "";

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"total_amount\":\""+ total_amount +"\","
                + "\"subject\":\""+ subject +"\","
                + "\"body\":\""+ body +"\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

        //请求
        String result = alipayClient.pageExecute(alipayRequest).getBody();

        //输出

        return result;
    }
}
